HD74LVCZ16245A

HD74LVCZ16245A 16–bit Bidirectional Transceivers with 3–state Outputs ADE-205-233 (Z) 1st. Edition February 1999 Description The HD74LVCZ16245A has sixteen two direction buffers, for the fittest at two direction bus lines with three state outputs in a 48 pin package. When (DIR) is high, data flows from the A inputs to the B outputs, and when (DIR) is low, data flows from the B inputs to the A outputs. A and B bus are separated by making enable input (G) high level. When VCC is between 0 and 1.5 V, the device is in the high impedance state during power up or power down. Low voltage and high speed operation is suitable at battery drive product (note type personal computer) and low power consumption extends the life of a battery for long time operation. Features VCC = 2.7 to 5.5 V All inputs VIH (Max) = 5.5 V (@VCC = 0 to 5.5 V) All inputs / outputs V I/O (Max) = 5.5 V (@V CC = 0 V or output off state) Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C) Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C) High impedance state during power up and power down Power off disables outputs, permitting live insertion High output current ±24 mA (@V CC = 3.0 to 5.5 V) HD74LVCZ16245A Function Table Inputs G L L H H : High level L : Low level X : Immaterial Z : High impedance DIR L H X B data to A bus A data to B bus Z Operation 2 HD74LVCZ16245A Pin Arrangement 1DIR 1 1B1 2 1B2 3 GND 4 1B3 5 1B4 6 VCC 7 1B5 8 1B6 9 GND 10 1B7 11 1B8 12 2B1 13 2B2 14 GND 15 ...